I am facing a weird problem. While browsing the C code of a project, the "Find this text string:" output results in a positive match, but the text is invisible [only the search results are invisible and not the menu]. The cursor moves up and down the list of results. Some of the lines are visible sometimes as you can see in the screen-shot below.
I did try to change the background color [from black to white], removed any instance of cscope.out in the project folder, rebuilt the database.

The system is FC4.
The cscope version in use is 15.7a.

Is this a known bug? Any solutions?

Screen-shots:
The screen-shots are taken using Putty. Same behavior is seen on gnome-terminal, konsole.